11 Who first discovered bacteria?
Antoni van Leeuwenhoek
12 Who is the father of microorganisms?
Antoni van Leeuwenhoek
13 Who discovered the virus?
Dmitry Ivanovsky and Martinus Beijerinck
14 Who for the first time called the virus, Virus?
Martinus Beijerinck
15 What was the first disease ever discovered?
Smallpox
16 Who developed the concept of color of light?
Isaac Newton
17 Who discovered Lake Victoria?
Muhammad al Idrisi
18 Who discovered principle of relativity?
Galileo Galilee
19 Who discovered gravity of Earth?
Isaac Newton
20 When Isaac Newton postulated theory of gravity?
1664
